Which outcome is most likely when increased magma viscosity obstructs pyroclastic ejection?

💡 Explanation

Stiff magma cannot fragment easily, therefore a lava dome forms within the volcanic vent driven by internal pressure building, stalling eruption, rather than tephra or ash ejection reaching the atmosphere because viscous obstruction inhibits fragmentation efficiency.

• Which consequence results when a river's sinuosity reaches peak instability?
• Which outcome becomes likelier as rising global temperatures accelerate glacial isostatic depression in island chains?
• Which outcome occurs when a coastal cliff composed of shale experiences repeated freeze-thaw cycles?
• Which displacement occurs on southbound trans-polar flights due to atmospheric dynamics?
• Which outcome occurs when deflation lowers the barrier island elevation?
• Which outcome occurs when carbon dioxide concentrations increase within karst cave systems?